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Journal Article: BibTeX citation key:  vantHof2005
Van't Hof, B., & Vollebregt, E. A. H. (2005). Modelling of wetting and drying of shallow water using artificial porosity. International Journal for numerical methods in Fluids, 2005(48), 1200–1217.
Added by: Matthias KUFELD 2009-07-31 16:50:21
Categories: 1.1 English , 2.5 Dutch part of the Meuse basin
Creators: Van't Hof, Vollebregt
Collection: International Journal for numerical methods in Fluids

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A new method for wetting and drying in two-dimensional shallow water fow models is proposed. The
method is closely related to the artificial porosity method used by different authors in Boussinesq-type
models, but is further extended for use in a semi-implicit (ADI-type) time integration scheme. The
method is implemented in the simulation model WAQUA using general boundary fitted coordinates and
is applied to realistic schematization for a portion of the river Meuse in the Netherlands.
A large advantage of the artificial porosity method over traditionally used methods on the basis of
‘screens’ is a strongly reduced sensitivity of model results. Instead of blocking all water transport in
grid points where the water level becomes small, as in screen-based methods, the flow is gradually
closed off. Small changes in parameters such as the initial conditions or bottom topography therefore
no longer lead to large changes in the model results. Copyright ? 2005 John Wiley & Sons, Ltd.
Added by: Matthias KUFELD

Digital Object Identifier (DOI):

shallow water equations; wetting and drying; artificial porosity method; sensitivity of model results
Added by: Matthias KUFELD

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